The shell of a clam.
In food service, the closing box (usually styrofoam but sometimes cardboard) given to consumers with take-out food.
Any object that, in (literal or figurative) resemblance to the shell of a clam, has a hinge on one edge and two surfaces that close together.
Any object with some other resemblance to either one or both halves of the shell of a clam.
A dredging bucket with hinges like the shell of a clam.
An amphitheater, especially an outdoor amphitheater; the semi-circular acoustic backdrop behind and above the performers.
To dig out by means of a clamshell (dredging bucket).
To compress or flatten underwater debris so as to avoid blocking a channel.
To open or close by means of a hinge, similar to the way a clamshell opens and closes.
To deform a die in a shape resembling the shell of a clam, as a result of uneven extrusion pressure.
The cavity of the mouth, especially the part of the mouth behind the gums and teeth that is bounded above by the hard and soft palates and below by the tongue and by the mucous membrane connecting it with the inner part of the mandible.
The hollow on the lower surface of the head from which the proboscis protrudes.